Two-button pendent switch.



F. G. DE RBAMBR. TWO-BUTTON PENDEN T SWITCH. APPLIOATIO'N FILED oom, 1907.

WITN'EsjE INVENTDR FRANK E. DE REAMEH. y

Atm]

UNITE strains Arana ernten.

FRANK C. DE BEAMER, F SCHENECTADY, NEW YORK, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

TWO-BUTTON PENDENT SWITCH.

Spcication of Letters Patent. Patented Jam 10, 1911.

Application ied October 2, 15107. Serial No. 395,539.

To all whom it may concern:

Be it known that I, FRANK C. Dn Brianna, a citizen of the United States, residing` .at

Schenectady, county ot' Schenectady, Statel ot New York. have invented certain new and useful improvements in Two-ButtonPendcnt Switches. speeitication.

This invention relates to mechanical cutouts for electric circuits. and its object is to apply the principles oie a two-button wallswitch to-a structure capable of use as a drop or pendent. switch. For the .sa-keet com pactness. the switch is of the single-pole type, and the movable blade acts as a bridging contact between two stationary contacts. fthe' particular features of novelty will ap- ]iaru' from the following' detailed deserinti'on and glainis.

.ln the acroinpanying;` drawing. Figure 1 is a longitudinal sectional elevation of a .switch enibodyiirc` my i1nprc.'einents; Fig. is a longitudinal.sectional elevation on a plano at right-angles to Fig. 1; Fig'. 3 is u .perspective view of an insulating shield Fig. 1 is a view ou a lai-ger scale of the operating parts; Fig. is a similar View at'ter the switch-blade has moved; and Fig. G is an en d view of the body.

The base or body portion 1 is i-nade of molded insulating material, such as porcelain, and is preferably cylindrical in shape. .lt has a central longitudinal opening or slot 2 with longitudinal grooi'es 3--4 on each side, res]wctively. extending' up from the lower end of said body. This body is incased in a metallic shell composed preferably of an upper halt 5 and u lower half G connected in any suitable manner. The upper half is lined with insulation T, and has aVv central aperture provided with an insulating bushing' S, through which the conducting and suspending` insulated conductors t) enter the casing. The barcd ends of these con ductors are respectively connected by binding-screws to two plates 11 secured to the upper end of the body on opposite sides of the seat 2 near ou'e side of said body, and each provided with a resilient linger 12 which depends into said slot..

The switch-blade 13 has a transverse head 14 whose ends are. adapt-ed to make Contact with the fingers 12 and electrically connect them when the bladeis moved to a position between them. When thev head 14 is swung ot which the fol-lowing is a.

to the other side of the body 1,'the circuit will be opened. The lower` end of the switch-blade is pivoted at lito 'the lower end of a hanger 1G which has a flange 1T secured `to the body at the upper end ,ot' the groove-l. A curved seatv 18 is lout in said hanger concentric ywith the pivot of the switch-blade, and a lugl 19 on said blade projects through said slot and plays freely back and forth therein, as the switch-blade swings to and fro.

A. stud 20 is fixed in the hanger somewhat above the pivot 15. the groove 3 and the other projects through a curved slot 21 in the switch-blade into the groove 4. 0n this stud, between the switchblade andthe hanger.` is loosely pivoted -a yoke 22', to the ends of which are pivoted the stems23 of the 4push-buttons 24,-25 which ride in the lower portion o'L' the slot 2 and project through holes in the lower end ot the easing. On this yoke a. laterally-projecting lug' 2G extending` through vthe slot 1S in the hanger just below the lug' 19 on the switch-blade. A helical spring 27' is coiled on thestu'd 2O behind the hanger, and its straight ends bear against the opposite sides of' the two lugs 1t) 26, tending to keep them iin line with each other. I

The adjacent faces of the switch-blade and yoke areeach provided with a locking lug, the two lugs being` adapted to'colperate with each other. Thus, when the parts stand as shown in Fig'. 1, the lug 28 on the yoke is inside of theluzgv 29 ontlie switchblade, but wh-en the button is pushed in and the parts move to the position shown in Fig'. 5 the lug on the yoke will be the outside one; owing` to thel fact that the lug' 2S moves in an up and down direction, while One end extends into-v that on the switch-blade moves in a substani tially transverse direction.

The operation is as follows: When the.

switch is open, the parts stand as shown in tip of the lug 28 clears the lug 29, theblade i is thrown over suddenly by the spring to the position shown in Fig. The head 14 enters between the resilient fingers l2 and closes the circuit. In opening the switch,

the lug 28 passes down outside of the lug 2),

and locks the blade from moving until the spring is ready to snapit over quickly.

In order to protect the conductors 9 from injury by arcs formed at the contacts, a

shield is placed over said contacts, consistl,

ing preferably of a sheet 30 of insulation having tongues 31 at each end adapted to engage with lips 32 at the ends of the slot 2, as shown in Fig. j1.

What if claim as new, and `desire to seeure by Letters Patent' of the United States, 1s,--

l. A two-button pendent switch comprising` a body of insulation having a longitudinal slot extending therethrough and grooves on opposite sides of said slot extending in from the bottom toward the top, resilient l contact fingers depending into saidslot at the upper end and on opposite sides of said slot near one side of said body, a hanger in one ot said grooves, a switch-blade pivoted to said hanger and having a head adapted to connect said lingers, a yoke pivoted to said hanger above the pivot of the switchblade, pushbut-tons depending from the ends of said yoke through the lower end of said slot, and operative and locking connections between said yoke and switch-blade.

2. In a switch, the combination of a body of insulation having a slot extending therethrough and grooves on opposite sides of said slot/extending from the bottom toward the top, a hanger having a bent end secured thereto at the upper vend of one of said grooves, a stud mounted transversely in said hanger and having its ends disposed in said grooves, stationary contacts secured to the upper end o said body, and a movable contact and actuating means carried by said hanger.' p

In a switch, the combination of a body of insulation havinga slot extending the-rethrough and a groove on one side of said slot extending from the bottom toward the top, a hanger secured atv the upper end of said groove and provided with an aperture, a switch-blade pivoted on the iront side part projecting through said aperture and adapted to engage the ends thereof, a stud mounted in said hanger abovethe pivot of the switch-blade, a yoke pivoted on said stud adjacent said poleA piece and provided with a bent part projecting through said aperture, a double-ended spring carried by said stud at the back of the hanger with its ends disposed on opposite sides of said projections, and a lug on said switch-blade directly engaging a lug on said yoke and operating to prevent movement of the switchblade during' tensioning of the spring by movement of said yoke.

4. In a switch. the combination of a hanger, a switch-blade pivoted on the front side ot said hanger and having a bent part projecting to the back of said hanger, a stud mounted in said hanger above the pivot of the switch-blade, a yoke pivoted on said stud between said hanger and switch-blade and having a bent part projecting to the 1, back of the hanger parallel to the bent part othe switch-blade, a double-ended springev carried by the saidy stud at the back of the hanger with its ends disposed 0n opposite sides ot said bent parts, and lugs on said switch-blade and said yoke adapted to engage each other and prevent movement of the switch-blade during the tensioning of the spring by movement pf the said yoke.

sulation having a slot extendino4 therethrough and provided with lips at the upper end, binding posts secured to the upper end ot' said body, and a sheet of insulation havto engage said lips.

In witness whereof, I have hereunto set my hand this th day of September, 1907.

1 FRANK C. DE BEAMER. Witnesses BENJAMIN B. HULL, HELEiv ORronn.

of said hanger and provided with a bent- The combination with a body of in-y ing slits in its ends to form tongues adapted 

